Temperature-regulator



2 Sheets-Sheet 2.

(No Model.)

J. P. MOBLROY. TEMPERATURE REGULATOR.

Patented Mar. 22, 1892.

Ina/@WWW Ja/m/e FHLZ' roy i UNrrEn STATES PATENT OFFICE.

JAMES F. MOELROOF ALBANY, NEW YORK.

TEMPERATURE-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 471,523, dated March22, 1892.

Application ledf'ehruary 11, 1891. Serial No. 381,103. (No model.)

To all whom it may concern:

Be it known that I, JAMES F. MGELROY, a citizen of the United States,residing at Albany, in the county of Albany and State of New York, haveinvented certain new and useful Improvements in Temperature-Regula tors,of which the following is a speciiication, reference being had thereinto the accompanying drawings.

This invention relates to new and useful improvements intemperature-regulators; and the invention consists in the peculiarconstruction of a temperatureregulator whereby it may be adj usted toopen or close a valve or damper at varying temperatures, and, further,in the peculiar construction of the connecting mechanism between thetemperature-regulator and the valve or damper, and, further, in thepeculiar construction, arrangement, and combination of the variousparts, all as more fully hereinafter described.

In the drawings, Figure l is a front elevation of my improveddamper-regulator, showing the connections to the valve and the valve andone of the elbows in section. Fig. 2 is a vertical central sectionthrough the temperature-regulator, partly in elevation. Fig. 3 is avertical section through the elbow.

A is the frame of the temperature-regulator, which is centrally providedWith a screwthreaded aperture, in which. a .block or plug B, having asuitable screw-threaded shank, engages. To this block is secured anexpansion-chamber C, preferably formed of two circular disks securedtogether at their edges. This expansion-chamber is provided on its frontface centrally with a bearing-plate D, which bears against the lever E,pivoted at the lower end of the frame and extending to near the topthereof, where it engages with one end of a bell-crank lever F, pivotedin the frame, the other end extending to the rear of the frame, where itis connected with a vertical actuatingrod G. This rod is screw threadedand is provided with lock-nuts H, adapted to strike against a rod orflange I to limit the movement of the rod, so as to prevent damage tothe valve or valve-seat. This rod connects at its lower end with theupper end of the rod J, which is suitably guided through the frame ofthe machine.

K are lock-nuts on the rod J, against which l the spring L bears to holdthe valve normally in it open position.

The frame A is provided at its lower edge with a screw-threaded socketM, into which a pipe N engages, this pipe vforming a rigid frame toconnect the valve casing of the steam-supply valve with the frame of theternperatureregulator, so that the valve-casing aridtemperature-regulator frame may always remain at a fixed distance apart.It frequently happens in such constructions that thetemperature-regulator cannot be placed directly over the valve, in whichcase it becomes necessary to use an elbow O in the pipe N. This elbow isof such shape as to allow of a bell-crank lever P being pivoted thereinupon a pin Q, which 'I preferably cast integral with the elbow-casing.One arm of the bell-crank extends in line with the vertical pipe Nandthe other arm extends in line with the horizontal section R, whichextends a suitable distance to a point over the Valvecasing S, anotherelbow with a suitable bellcrank lever being placed over the valve togive a vertical movement to the valve-stem, as'plainly shown in thedrawings. One side of the elbow is open, and this is adapted to beclosed by means of a face-plate S', which has a lug T against the end ofthe pin Q to hold the bell-crank lever upon its pivot. It is alsoprovided with a suitable aperture to receive a screw T entering a hollowpost U to secure the cap in position. By means of this construction I amenabled to construct a rigid frame from the frame of thetemperature-regulator to the valve-casing, making all necessary bends.

As the pins upon the ends of the bell-crank lever loosely engage in theends of the rods, being held from displacement by the plate S it isevident that if that plate is taken out the bell-crank lever is detachedby simplywithdrawing it from its pivotpost and withdrawing the pins fromthe ends of the connecting-rods.

In order to vary the operation of my thermostat, I connect to the blockB a suitable hand-lever U', by means of which the block, together withthe expansion-chamber, maybe turned. The turning of this block by meansl of the screw-threaded shank engaging in the screw-threaded aperturecarries the expansion-chamber toward or from the lever E, requiring agreater or less expansion in the expansion-chamber to effect said leverand the valve. r.

I have found that with a comparatively small movement of the lever U Icould vary thev point at which the valve would be'. closed from eight toten degrees.

What I claim as my invention is 1. The combination, with a thermostat,its frame, and a valve controlled thereby, of a rigid frame connectingthe Valve-casing and thermostat-frame and comprising an elbow or bend,abell-crank lever piaoted inf the elbow, 4

and an actuating-rod connected thereto and extendingon both sidesthereof,substantially as described.

2. In a.. temperature-regulator, the combiP nation withihe-frame, of athermostatconsi'stingr of, a cell; containing an eXpansi-ble medium,acentralscrew-.threaded shank secured,

to saidcelhandalever for rotating. Saidcellandv L adjiisting ittoorvilrom theactuating, medium, substantially, as described. 3;4 Thecombination, with. a. ltemperatureregulator and a rigidtnbular frameconnectl ing the frame of the regulator with the Valveg casing, of anelbow O, having a pin cast integral therewith, a bell-crank lever havinga vsocket formed thereon adapted to lit upon said pin, and bearings atthe end of said lever to connect with the actuating-rods,sub

stantially as described.

4. Ina device of the kind described, the combination, with the tubularframe, of the elbow O, having the pin Q cast integral therewith, thebell-crank lever P, and the faceplate S', forming a cap for thepivot-pin Q, the parts being arranged to operate substantia'lly as andyfor the purpose described.

.5i In a temperature-regulator, the combi- Anatiomwith asupporting-frame and valveractuating mechanismen the frame,of a thermiccell arranged between` the mechanism and.z the frame, a.` supportingprojectifon on the v cell, and an adjnstable connectionl between theprojecticm4 and frame, substantially as-de scribed. l In testimonywhereofI afx my signature in Qpresence of two witnesses. f JAMES F.MCELROY.`

Witnesses:

H. J.. NoDINE.

